Flasher relays – pulse generation for indicator and warning light circuits
Flasher relays are the compact control devices that generate the regular pulse for direction indicators, hazard warning lights and warning lamps in the electrical system of trucks and commercial vehicles. On tail lifts they often drive the amber warning lamps that light up at the platform area during raising and lowering movements. At SULEJ Ladebordwand you will find flasher relays as replacement parts for failed or irregularly pulsing modules – a small but safety-relevant element of the vehicle lighting.
Electronic and load-independent variants
Modern flasher relays work electronically and generate the pulse via an integrated oscillator circuit that delivers a stable rhythm independent of the connected lamp load. Older thermomechanical designs by contrast use a bimetallic strip which opens and closes alternately when current flows – sensitive to load changes. Load-independent electronic flasher relays are today the standard, since they also pulse correctly with modern LED lamps. On the connection side, 2-, 3- or multi-pole plugs are common; voltage lies within the typical commercial vehicle electrical system at 12 or 24 volts.
